自考《英语（一）》试题练习：介词的固定搭配（10.15）
单选题
[2008.10]The President was among the first to congratulate the scientist ______ his new discovery.
A.at
B.in
C.about
D.on
单选题
[2008.10]The President was among the first to congratulate the scientist ______ his new discovery.
A.at
B.in
C.about
D.on
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